Justcaptions is answering right now. Last checked moments ago. It exposes 9 tools. Last commit 7 Oct 2026.
Audio transcription, caption correction, translation and 16 video caption styles.
What changed 2
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 7 October 2026. No other catalogue keeps this.
What the code does
We read the source, 10 h ago · tools taken from the live server · rules ccca72095570
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
subprocess.run(['ffmpeg', '-y', '-v', 'error', '-f', 'rawvideo', '-pixel_format', 'rgb24',
env=dict(os.environ);env['JUSTCAPTIONS_API_KEY']='';env['JUSTCAPTIONS_STATE_DIR']=str(out/'state');env.pop('JUSTCAPTIONS_METRICS_ID',None)
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.
claude mcp add justcaptions --transport http https://api.justcaptions.com/mcp{
"mcpServers": {
"justcaptions": {
"url": "https://api.justcaptions.com/mcp"
}
}
}[mcp_servers.justcaptions]
url = "https://api.justcaptions.com/mcp"{
"mcpServers": {
"justcaptions": {
"url": "https://api.justcaptions.com/mcp"
}
}
}{
"mcpServers": {
"justcaptions": {
"url": "https://api.justcaptions.com/mcp"
}
}
}Available tools 9
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
correct_captions
estimate_cost
list_fonts
pick_emojis
get_pricing
list_styles
transcribe_audio
translate_captions
get_usage
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://api.justcaptions.com/mcp | streamable-http | answering | 89 ms | 0 min ago |
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Justcaptions — questions
Answers built from our own checks of this server.